changed Collective Editor functionality in 4.5.7?

In Max/MSP 4.5.7, it seems as though the behavior when building
plugins has changed. In the past, Max would bundle up all the 3rd
party externals that my plugin needed, and include them in my plugin
without me having to specify them in the Collective Editor, nor any
special file paths in the main File Preferences dialog.

That seems to have changed between 4.5.6 and 4.5.7 – was this
intended? I saw no mention of it in the change log…